GH-922 improve version select dialogs

8 files changed, 154 insertions, 17 deletions

diff --git a/application/MultiMC.cpp b/application/MultiMC.cpp
index ba6d7880..b993aa5e 100644
--- a/application/MultiMC.cpp
+++ b/application/MultiMC.cpp
@@ -12,7 +12,6 @@
 #include <QDesktopServices>
 #include <QDebug>
 
-#include "dialogs/VersionSelectDialog.h"
 #include "InstanceList.h"
 #include "auth/MojangAccountList.h"
 #include "icons/IconList.h"
diff --git a/application/dialogs/CopyInstanceDialog.cpp b/application/dialogs/CopyInstanceDialog.cpp
index 7c98978b..5b8e3096 100644
--- a/application/dialogs/CopyInstanceDialog.cpp
+++ b/application/dialogs/CopyInstanceDialog.cpp
@@ -21,8 +21,6 @@
 #include "ui_CopyInstanceDialog.h"
 
 #include "Platform.h"
-#include "dialogs/VersionSelectDialog.h"
-#include "dialogs/ProgressDialog.h"
 #include "dialogs/IconPickerDialog.h"
 
 #include "BaseVersion.h"
diff --git a/application/dialogs/VersionSelectDialog.cpp b/application/dialogs/VersionSelectDialog.cpp
index 354857e7..57514fe7 100644
--- a/application/dialogs/VersionSelectDialog.cpp
+++ b/application/dialogs/VersionSelectDialog.cpp
@@ -19,6 +19,7 @@
 #include <QHeaderView>
 
 #include <dialogs/ProgressDialog.h>
+#include "CustomMessageBox.h"
 #include "Platform.h"
 
 #include <BaseVersion.h>
@@ -46,6 +47,7 @@ VersionSelectDialog::VersionSelectDialog(BaseVersionList *vlist, QString title,
 	ui->listView->setModel(m_proxyModel);
 	ui->listView->header()->setSectionResizeMode(QHeaderView::ResizeToContents);
 	ui->listView->header()->setSectionResizeMode(resizeOnColumn, QHeaderView::Stretch);
+	ui->sneakyProgressBar->setHidden(true);
 
 	if (!cancelable)
 	{
@@ -58,6 +60,11 @@ void VersionSelectDialog::setEmptyString(QString emptyString)
 	ui->listView->setEmptyString(emptyString);
 }
 
+void VersionSelectDialog::setEmptyErrorString(QString emptyErrorString)
+{
+	ui->listView->setEmptyErrorString(emptyErrorString);
+}
+
 VersionSelectDialog::~VersionSelectDialog()
 {
 	delete ui;
@@ -77,26 +84,89 @@ int VersionSelectDialog::exec()
 	{
 		loadList();
 	}
-	auto idx = m_proxyModel->getRecommended();
-	if(idx.isValid())
+	else
 	{
-		ui->listView->selectionModel()->setCurrentIndex(idx,QItemSelectionModel::SelectCurrent | QItemSelectionModel::Rows);
-		ui->listView->scrollTo(idx, QAbstractItemView::PositionAtCenter);
+		if (m_proxyModel->rowCount() == 0)
+		{
+			ui->listView->setEmptyMode(VersionListView::String);
+		}
+		preselect();
 	}
 	return QDialog::exec();
 }
 
+void VersionSelectDialog::closeEvent(QCloseEvent * event)
+{
+	if(loadTask)
+	{
+		loadTask->abort();
+		loadTask->deleteLater();
+		loadTask = nullptr;
+	}
+	QDialog::closeEvent(event);
+}
+
 void VersionSelectDialog::loadList()
 {
-	Task *loadTask = m_vlist->getLoadTask();
+	if(loadTask)
+	{
+		return;
+	}
+	loadTask = m_vlist->getLoadTask();
 	if (!loadTask)
 	{
 		return;
 	}
-	ProgressDialog *taskDlg = new ProgressDialog(this);
-	loadTask->setParent(taskDlg);
-	taskDlg->exec(loadTask);
-	delete taskDlg;
+	connect(loadTask, &Task::finished, this, &VersionSelectDialog::onTaskFinished);
+	connect(loadTask, &Task::progress, this, &VersionSelectDialog::changeProgress);
+	loadTask->start();
+	ui->sneakyProgressBar->setHidden(false);
+}
+
+void VersionSelectDialog::onTaskFinished()
+{
+	if (!loadTask->successful())
+	{
+		CustomMessageBox::selectable(this, tr("Error"),
+									 tr("List update failed:\n%1").arg(loadTask->failReason()),
+									 QMessageBox::Warning)->show();
+		if (m_proxyModel->rowCount() == 0)
+		{
+			ui->listView->setEmptyMode(VersionListView::ErrorString);
+		}
+	}
+	else if (m_proxyModel->rowCount() == 0)
+	{
+		ui->listView->setEmptyMode(VersionListView::String);
+	}
+	ui->sneakyProgressBar->setHidden(true);
+	loadTask->deleteLater();
+	loadTask = nullptr;
+	preselect();
+}
+
+void VersionSelectDialog::changeProgress(qint64 current, qint64 total)
+{
+	ui->sneakyProgressBar->setMaximum(total);
+	ui->sneakyProgressBar->setValue(current);
+}
+
+void VersionSelectDialog::preselect()
+{
+	if(preselectedAlready)
+		return;
+	preselectedAlready = true;
+	selectRecommended();
+}
+
+void VersionSelectDialog::selectRecommended()
+{
+	auto idx = m_proxyModel->getRecommended();
+	if(idx.isValid())
+	{
+		ui->listView->selectionModel()->setCurrentIndex(idx,QItemSelectionModel::SelectCurrent | QItemSelectionModel::Rows);
+		ui->listView->scrollTo(idx, QAbstractItemView::PositionAtCenter);
+	}
 }
 
 BaseVersionPtr VersionSelectDialog::selectedVersion() const
diff --git a/application/dialogs/VersionSelectDialog.h b/application/dialogs/VersionSelectDialog.h
index 23bd158a..6b83535e 100644
--- a/application/dialogs/VersionSelectDialog.h
+++ b/application/dialogs/VersionSelectDialog.h
@@ -46,19 +46,34 @@ public:
 	void setFuzzyFilter(BaseVersionList::ModelRoles role, QString filter);
 	void setExactFilter(BaseVersionList::ModelRoles role, QString filter);
 	void setEmptyString(QString emptyString);
+	void setEmptyErrorString(QString emptyErrorString);
 	void setResizeOn(int column);
 	void setUseLatest(const bool useLatest);
 
+protected:
+    virtual void closeEvent ( QCloseEvent* );
+
 private
 slots:
 	void on_refreshButton_clicked();
 
+	void onTaskFinished();
+	void changeProgress(qint64 current, qint64 total);
+
+private:
+	void preselect();
+	void selectRecommended();
+
 private:
-	Ui::VersionSelectDialog *ui;
+	Ui::VersionSelectDialog *ui = nullptr;
 
-	BaseVersionList *m_vlist;
+	BaseVersionList *m_vlist = nullptr;
 
-	VersionProxyModel *m_proxyModel;
+	VersionProxyModel *m_proxyModel = nullptr;
 
 	int resizeOnColumn = 0;
+
+	Task * loadTask = nullptr;
+
+	bool preselectedAlready = false;
 };
diff --git a/application/dialogs/VersionSelectDialog.ui b/application/dialogs/VersionSelectDialog.ui
index e4014e11..420e853d 100644
--- a/application/dialogs/VersionSelectDialog.ui
+++ b/application/dialogs/VersionSelectDialog.ui
@@ -40,6 +40,16 @@
     </widget>
    </item>
    <item>
+    <widget class="QProgressBar" name="sneakyProgressBar">
+     <property name="value">
+      <number>24</number>
+     </property>
+     <property name="format">
+      <string notr="true">%p%</string>
+     </property>
+    </widget>
+   </item>
+   <item>
     <layout class="QHBoxLayout" name="horizontalLayout">
      <item>
       <widget class="QPushButton" name="refreshButton">
diff --git a/application/pages/VersionPage.cpp b/application/pages/VersionPage.cpp
index 3de6a4c7..7cb99763 100644
--- a/application/pages/VersionPage.cpp
+++ b/application/pages/VersionPage.cpp
@@ -272,6 +272,7 @@ void VersionPage::on_forgeBtn_clicked()
 	vselect.setExactFilter(BaseVersionList::ParentGameVersionRole, m_inst->currentVersionId());
 	vselect.setEmptyString(tr("No Forge versions are currently available for Minecraft ") +
 						   m_inst->currentVersionId());
+	vselect.setEmptyErrorString(tr("Couldn't load or download the Forge version lists!"));
 	if (vselect.exec() && vselect.selectedVersion())
 	{
 		ProgressDialog dialog(this);
@@ -287,6 +288,7 @@ void VersionPage::on_liteloaderBtn_clicked()
 	vselect.setExactFilter(BaseVersionList::ParentGameVersionRole, m_inst->currentVersionId());
 	vselect.setEmptyString(tr("No LiteLoader versions are currently available for Minecraft ") +
 						   m_inst->currentVersionId());
+	vselect.setEmptyErrorString(tr("Couldn't load or download the LiteLoader version lists!"));
 	if (vselect.exec() && vselect.selectedVersion())
 	{
 		ProgressDialog dialog(this);
diff --git a/application/widgets/VersionListView.cpp b/application/widgets/VersionListView.cpp
index fc0bcd0a..1e327534 100644
--- a/application/widgets/VersionListView.cpp
+++ b/application/widgets/VersionListView.cpp
@@ -65,6 +65,23 @@ void VersionListView::reset()
 void VersionListView::setEmptyString(QString emptyString)
 {
 	m_emptyString = emptyString;
+	updateEmptyViewPort();
+}
+
+void VersionListView::setEmptyErrorString(QString emptyErrorString)
+{
+	m_emptyErrorString = emptyErrorString;
+	updateEmptyViewPort();
+}
+
+void VersionListView::setEmptyMode(VersionListView::EmptyMode mode)
+{
+	m_emptyMode = mode;
+	updateEmptyViewPort();
+}
+
+void VersionListView::updateEmptyViewPort()
+{
 	if(!m_itemCount)
 	{
 		viewport()->update();
@@ -85,6 +102,18 @@ void VersionListView::paintEvent(QPaintEvent *event)
 
 void VersionListView::paintInfoLabel(QPaintEvent *event)
 {
+	QString emptyString;
+	switch(m_emptyMode)
+	{
+		case VersionListView::Empty:
+			return;
+		case VersionListView::String:
+			emptyString = m_emptyString;
+			break;
+		case VersionListView::ErrorString:
+			emptyString = m_emptyErrorString;
+			break;
+	}
     //calculate the rect for the overlay
     QPainter painter(viewport());
     painter.setRenderHint(QPainter::Antialiasing, true);
@@ -93,7 +122,7 @@ void VersionListView::paintInfoLabel(QPaintEvent *event)
 	
 	QRect bounds = viewport()->geometry();
 	bounds.moveTop(0);
-	QTextLayout layout(m_emptyString, font);
+	QTextLayout layout(emptyString, font);
 	qreal height = 0.0;
 	qreal widthUsed = 0.0;
 	QStringList lines = viewItemTextLayout(layout, bounds.width() - 20, height, widthUsed);
diff --git a/application/widgets/VersionListView.h b/application/widgets/VersionListView.h
index f33a6fdb..4fcbd8ee 100644
--- a/application/widgets/VersionListView.h
+++ b/application/widgets/VersionListView.h
@@ -22,11 +22,22 @@ class VersionListView : public QTreeView
 {
 	Q_OBJECT
 public:
+
 	explicit VersionListView(QWidget *parent = 0);
 	virtual void paintEvent(QPaintEvent *event) override;
-	void setEmptyString(QString emptyString);
 	virtual void setModel ( QAbstractItemModel* model );
 
+	enum EmptyMode
+	{
+		Empty,
+		String,
+		ErrorString
+	};
+
+	void setEmptyString(QString emptyString);
+	void setEmptyErrorString(QString emptyErrorString);
+	void setEmptyMode(EmptyMode mode);
+
 public slots:
 	virtual void reset() override;
 
@@ -36,8 +47,11 @@ protected slots:
 
 private: /* methods */
 	void paintInfoLabel(QPaintEvent *event);
+	void updateEmptyViewPort();
 
 private: /* variables */
 	int m_itemCount = 0;
 	QString m_emptyString;
+	QString m_emptyErrorString;
+	EmptyMode m_emptyMode = Empty;
 };